JP2000356019A - Wall joint treatment construction method for finishing building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To finish a wall material cleanly without causing color difference, cracking, etc., on the wall material for building finish applied through a joint surface part of a plaster board surface as a backing. SOLUTION: A kraft paper material 1 having the same rate of water absorption and rate of shrinkage as plaster boards 2A, 2B is stuck on a joint surface part P of the plaster boards 2A, 2B attached on a surface of a backing 2. This kraft paper material 1 is stuck by applying vegetable starch paste 3 immediately before joint treatment after previously applying the vegetable starch paste 3, leaving it for a while and keeping it to expand. Additionally, the kraft paper material 1 is processed thin to 50 g-80 g per one meter square.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called Satsuma Nakagirishima wall using, for example, volcanic ash white sand (hereinafter referred to as "shirasu") as a raw material for building finishing materials and plastering finishing materials. BACKGROUND OF THE INVENTION The present invention relates to a base treatment of a wall material for a building finish such as a plastering wall material or a wall material for a plastered wall with a raw material or the like, and mainly relates to a method of jointing a wall for a building finish on a joint surface portion of a gypsum board as a base material.

[0002]

2. Description of the Related Art Conventionally, a construction method as shown in FIG. 4 is employed in a base treatment of a plaster finish wall material or a painted wall material as an architectural finish wall material. This method comprises three steps. First, boards 101A and 101B are firmly fixed to the surface of each of the bases 100 to be joined and are abutted, and a caulking material is always inserted into the gap of the joint portion 102 between the two boards 101A and 101B. Or fill in with joint putty. Then, a tape material 103 processed into a mesh shape, for example, made of cloth, vinyl, glass fiber, or the like, is attached with a bond-based adhesive.
3 is applied smoothly with a joint joint putty 104 in a width of about 8 to 12 cm.

[0003]

However, according to the above-mentioned conventional method, the following problems occur when the wall material for building finish is to be completed by one coating after the joint processing of the foundation. I do.

[0004] That is, in the drying process of the building finishing wall material after being applied to the base surface, the penetration of the moisture in the joint treated portion is inevitably faster, and the drying is remarkably faster than the other surfaces. The wall material itself may have different colors or cracks. In addition, the conventional joint method fills gaps in the joint portion 102,
Three steps of sticking the tape material 103 and applying the joint joint putty 104 had to be performed, and the work was troublesome. Furthermore, 3 in the conventional joint method
The construction time required for the process is about 8 hours to 24 hours, and the construction period is a factor that takes an extra day.
In addition, the cost is about 800 yen to 10 yen per meter.
There was a problem that the cost was 00 yen and the whole construction was expensive. Moreover, in the conventional joint method, it is necessary to take measures to prevent the occurrence of cracks in the processing of the joint portion 102 of the base boards 101A and 101B. In addition, a special device was required for the construction such as applying an adhesive reinforcing agent as a base treatment to the surfaces of the boards 101A and 101B in advance so as not to peel off.

In view of the above, the present invention has been made in view of the above-described problems, and has different colors and colors on wall materials for architectural finishing applied over joints on a board surface as a foundation. An object of the present invention is to provide a wall joint processing method for a building finish capable of finishing a wall material neatly without generating cracks and the like, and shortening the time required for the execution of the joint processing and reducing the cost. Things. In particular, the present invention is intended to effectively utilize natural abundant resources of volcanic ash shirasu as an unfinished original form as a wall material for building finishing. It is possible to emboss it on the wall material for building finish as it is.

[0006]

Therefore, according to the present invention, the same water absorption rate as the gypsum boards 2A, 2B is applied to the joint surfaces P of the gypsum boards 2A, 2B adhered to the surface of the base 2. By sticking the kraft paper material 1 having
The above-mentioned problem has been solved.

The kraft paper 1 has the same expansion and contraction ratio as the gypsum boards 2A and 2B, thereby solving the above-mentioned problem.

Further, the above-mentioned problem has been solved by sticking the kraft paper material 1 with a vegetable starch paste 3 as a natural material.

Further, the kraft paper material 1 is coated with the vegetable starch paste 3 in advance, allowed to expand for a while, and then applied again with the vegetable starch paste 3 immediately before the joint processing to be adhered. Solved the above-mentioned problem.

[0010] In addition, the kraft paper material 1 is 1 square m
The above-mentioned problem was solved by being thinly processed to 50 g to 80 g per contact.

On the other hand, an appropriate amount of water is added to a raw material for building finishing which is made of the raw unprocessed dry shirasu raw material, and the mixture is kneaded, and the gypsum board 2A, The above-mentioned problem was solved by forming a wall material for architectural finishing, such as a plastering wall material or a painted wall material, by painting the 2B surface, applying a surface finishing process of various designs, and drying. did.

Also, an appropriate amount of water is added to a wall material for building finishing composed of dried shirasu, gypsum material, clay material, shirasu balloon, coloring pigment, sasa, and adhesion reinforcing agent, and the mixture is kneaded. 2 gypsum board 2A stuck on the surface,
The above-mentioned problem was solved by forming a wall material for architectural finishing, such as a plastering wall material or a painted wall material, by painting the 2B surface, applying a surface finishing process of various designs, and drying. did.

In addition, dried shirasu 50-65%, gypsum material 30-40%, clay material 3-10%, shirasu balloon 5-5%
10%, adhesion reinforcing agent 0.08 to 2%, coloring pigment 0.01
３3%, susa 1-5% as a composition component, an appropriate amount of water is added and kneaded to a wall material for building finishing,
Gypsum board 2A after the joint treatment stuck to the surface,
The above-mentioned problem was solved by forming a wall material for architectural finishing, such as a plastering wall material or a painted wall material, by painting the 2B surface, applying a surface finishing process of various designs, and drying. did.

In the method for treating a wall joint for finishing a building according to the present invention, the gypsum board 2 adhered to the surface of the foundation 2
A on the joint surface portion P of the gypsum board 2A,
By adhering the kraft paper material 1 having the same water absorption rate and expansion / contraction rate as 2B, the moisture absorption / permeation speed of the joint surface P and the surface Q other than the joint surface P becomes substantially the same. . Therefore, the gypsum boards 2A, 2B of the base 2
The so-called Satsuma center, which made the drying conditions of the finishing wall material such as the plastering finishing wall material or the painted wall material painted on the surface almost the same, especially the raw unprocessed dry Shirasu material After application of a wall material for building finish called a Kirishima wall to the two bases, it imparts sufficient strength to withstand shrinkage due to drying.

Further, the kraft paper material 1 is adhered with the vegetable starch paste 3 as a natural material, which causes water penetration from the kraft paper material 1 by using a conventional chemical paste or glue-based paste. A color difference due to a chemical reaction between the glue to be made and a wall material for architectural finishing such as a wall material for plastering or a painted wall is prevented.

Further, the kraft paper material 1 is preliminarily coated with the vegetable starch paste 3 and left for a while to expand, thereby maintaining the kraft paper material 1 itself in the expanded state.
Even if the vegetable starch paste 3 is applied again immediately before the joint processing, further expansion is suppressed, and wrinkles do not occur on the kraft paper material 1 itself in the drying process after the application of the wall material for building finish. Moreover, the kraft paper material 1 itself returns to its original state even with shrinkage, so that the wall material does not crack.

In addition, the kraft paper material 1 is 1 square m
Since it is thinly processed to 50 g to 80 g per contact, no step is generated in the finish of the wall material for building finish.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1 to FIG.
A kraft paper material 1 having the same water absorption rate and expansion / contraction rate as the gypsum boards 2A, 2B is applied to a joint surface portion P of the gypsum boards 2A, 2B adhered to the surface, and a vegetable starch paste 3 as a natural material. It is what was stuck by. The kraft paper material 1 is thinly processed to 50 g to 80 g per square meter, and has a width of about 5 to 6 cm, for example.

As a plastering wall material (not shown) such as a plastering wall material or a plastering wall material to be coated on the gypsum boards 2A and 2B of the foundation 2, for example, dry shirasu is used as a material. We use the so-called Satsuma Naka-Kirishima wall, a wall material for building finish.

In the present embodiment, a wall material for building finish called Satsuma Nakagirishima wall is adopted, but the present invention is not limited to this, and other wall materials may be used. Of course. In short, the joint surface portion P of the gypsum boards 2A and 2B of the groundwork 2 and the surface Q other than the joint surface portion P correspond to the groundwork 2.
Any material may be used as long as it gives substantially the same conditions to the wall material for building finish applied to the building.

Then, the kraft paper material 1 is suddenly ground
If the kraft paper material 1 itself is expanded and wrinkled, the gypsum boards 2A, 2B
The air enters between the kraft paper material 1 and the kraft paper material 1 to cause peeling. In order to avoid this, in the joint processing of the groundwork 2, the vegetable starch paste 3 is applied to the kraft paper material 1 in advance, expanded for a while, and the expanded state of the kraft paper material 1 itself is maintained. Then, immediately before the joint treatment, the vegetable starch paste 3 is applied again and adhered to the joint surface portion P. As a result, further expansion of the kraft paper material 1 is suppressed, wrinkles are not generated in the kraft paper material 1 itself during the drying process after application and finishing of the wall material for building finish, and the kraft paper material 1 is resistant to shrinkage. Since it returns to its original state, it does not cause cracking.

As the wall material for finishing the building, dry shirasu is 50 to 65%, preferably 53%, and gypsum material is 30%.
４０40%, preferably 35%, clay material is 3-10%, preferably 4%, shirasu balloon is 5-10%, preferably 7%, and the adhesion reinforcing agent is 0.08-2%, preferably Is 1%, and the coloring pigment is 0.01 to 3%, preferably 1%.
And 1 to 5%, preferably 2%, of sasa.

Specifically, the dried shirasu is adjusted to a particle size of about 2 mmφ or less by a mesh sieve or the like, and dried after removing mixed impurities. The gypsum material uses, for example, gypsum plaster as a binder material for dried shirasu, and the clay material uses, for example, a clay cement for imparting plasticity in terms of workability. Shirasu balloons are used to make the surface finish soft and soft. As the adhesion reinforcing agent, vegetable glue or the like is used to improve workability of the iron and prevent powdering of the surface in a dry state. This adhesive reinforcing agent may be, for example, a cotton material.
03-1%, preferably 0.05%, for example, seaweed is boiled and powdered, and 0.05-1%, preferably 0.1%.
09% and the like. The susa is a binder material and uses, for example, hemp susa or straw sasa as a crack preventing material.

Gypsum plaster as the above-mentioned gypsum material is a self-hardening cement which has relatively high strength against shrinkage cracks and the like, and its main component is calcined gypsum. When this calcined gypsum is kneaded with water with hemihydrate gypsum, it undergoes a hydration reaction to obtain water of crystallization to become gypsum dihydrate, and then excess water other than water of crystallization diffuses and hardens. Gypsum plaster is made of calcined gypsum as a main raw material, a setting retarder is added by adding a setting retarder, and the setting time is adjusted, and river sand, silica sand, lightweight aggregate, calcium carbonate, etc. are mixed in advance with the on-site mixing plaster. There are pre-mixed plasters that can be used depending on the application.

The above-mentioned clay material is a hydrated silicate mineral which exhibits plasticity when wet and exhibits rigidity when dried, such as silicon dioxide, aluminum oxide, iron oxide, and the like.
A viscous cement material containing magnesium oxide, calcium oxide, titanium oxide and the like as a component is employed, which is particularly excellent in tackiness, plasticity and dispersibility, PH 5.9, plasticity index 22.1, viscosity 74 μ97%. Pass.

As the above-mentioned adhesive reinforcing agent, natural cellulose (pulp fiber) is used as a raw material, and a part of the hydrogen atoms of the hydroxyl group of the cellulose is replaced with a methyl group, a hydroxypropyl group, a hydroxyethyl group or the like. For example, a nonionic water-soluble cellulose ether having high water-retention, such as a water-soluble cellulose ether or a hydroxypropylmethylcellulose, which has a high water retention property by eliminating hydrogen bonds and allowing water to easily enter between cellulose molecules is employed. At this time, a clay grade material such as clay having a thickness of about 400 to 4000 mPa · s may be adopted so that the surface of the wall material is not made as shiny or glossy as possible.

Examples of the above-mentioned coloring pigments include inorganic pigments and organic pigments having alkali resistance, and a mixture of inorganic pigments and organic pigments. Some of them are intercalated between particles such as cement, lime and gypsum plaster. The desired color is exhibited by the attachment. For example, titanium oxide,
Rutile type titanium oxide, chrome oxide, zinc oxide, lead white,
Barium sulfate, chalk, carbon, kaolin, talc, bentonite, red iron oxide, graphite, yellow iron oxide, black iron oxide, ferric oxide, ultramarine blue, cobalt blue, cobalt purple, zinc chromate, and these siliconized products Examples of the coloring pigment include inorganic pigments and organic pigments such as quinacridone, watch angred, and dioxazine violet.

Further, since the dried shirasu itself has no self-hardening property and adhesiveness, in order to provide the dried shirasu with curability and adhesiveness, the ratio of the dry shirasu is, for example, 10 and the gypsum material is 4-5. Mix by volume. At this time, if the amount of gypsum material and clay material is too large and the viscosity is too strong, small cracks will occur on the surface in the coated finish state, so keep the gypsum material and clay material as small as possible to avoid this To do. Further, since the dried shirasu itself widely extends from coarse particles to fine particles, cracks are prevented from being generated by using sasa as a reinforcing material described above for the purpose of enhancing the joining effect between particles. Furthermore, in order to impart plasticity to the dried shirasu itself, the dried shirasu is 6 and the clay material C is 1 for example.
Mix at a specific amount of ~ 1.7.

Then, these wall materials for building finishing 20
Approximately 8 liters of water is added to each kg and kneaded to form a paste. This is attached to the surface of the base 2,
For example, the gypsum boards 2A and 2B having a thickness of about 12 mm
Is applied with a trowel or the like to a thickness of, for example, about 5 mm. Then, after finishing the surface in various ways to improve the design, the surface is finished with various designs to enhance the design, and then dried, thereby forming a plastering finish wall material or a painted wall material.

At this time, the joint surface portion P of the gypsum board 2A, 2B and the joint surface portion P
Since the absorption and penetration rates of moisture with the other surface Q other than the surface are substantially the same, the plaster finishing wall material painted on the joint surface portion P of the gypsum board 2A, 2B surface of the base 2 and the surface Q other than the joint surface portion Alternatively, the drying conditions of the building finishing wall material such as the painted wall material are substantially the same over the entire surface. Therefore, strength enough to withstand shrinkage of itself due to drying after application to the gypsum board 2A, 2B surface of the foundation 2 of so-called Satsuma Nakagirishima wall, which is a so-called Satsuma Nakagirishima wall, made of dried shirasu. Can be provided. Further, since the original color of dried shirasu is white-gray, there is an advantage that it is easy to be colored. As the pigment coloring material, a commercially available ordinary plastering pigment can be used. further,
After finishing the pattern on the finished surface with a trowel or the like to a thickness of about 5 mm, wait for the degree of curing, then rub, scribble, hold down, roll, etc. using a trowel, roller, comb, etc. Formed. In the present embodiment, the original characteristics of Shirasu are used as the interior wall finishing material. However, the present invention can also be applied to an exterior wall finishing material, a dirt floor, a floor, a ceiling, and the like.

[0031]

As described above, according to the present invention, a kraft having the same water absorption as the gypsum boards 2A, 2B is provided on the joint surface P of the gypsum boards 2A, 2B adhered to the surface of the base 2. Since the paper material 1 is adhered, the wall material is beautifully finished without causing a color difference, a crack, or the like to occur on the building finishing wall material applied via the joint surface portion P of the gypsum boards 2A and 2B of the base 2. be able to.

In particular, even when the natural abundant resources of volcanic ash shirasu are effectively used as unfinished original materials as wall materials for building finishing, the natural softness and roughness of the shirasu's original features can be naturally applied without any problem. It is possible to make it stand out on the wall material for building finish as it is.

Further, according to the present invention, the gap between the joint portions 102 between the two boards 101A and 101B is filled with a caulking material or joint putty as in the conventional method, for example, cloth, vinyl, glass fiber. It is not necessary to go through a complicated construction process in which a tape material 103 processed into a mesh shape such as made of a material is adhered with a bond-based adhesive and is smoothly applied on the tape material 103 with a joint joint putty 104. Can be reduced to about 20 to 30 minutes. In terms of cost, it is possible to provide an extremely low-priced wall joint processing method for building finishing, for example, about 180 yen per meter.

The kraft paper material 1 has the same expansion and contraction rate as the gypsum boards 2A and 2B, and is applied via the joint surface portion P of the gypsum boards 2A and 2B adhered to the surface of the base 2. The wall material for architectural finishing does not have different colors or cracks, and can be finished to a beautiful wall surface.

Further, the kraft paper material 1 is adhered with a vegetable starch paste 3 as a natural material, so that water from the kraft paper material 1 by using a conventional chemical paste or glue paste is used. It is possible to prevent the occurrence of a color difference due to a chemical reaction between the glue caused by the penetration and the wall material for architectural finishing, such as a wall material for plastering or a painted wall.

Further, the kraft paper material 1 is coated with the vegetable starch paste 3 in advance, allowed to expand for a while, and then applied again with the vegetable starch paste 3 immediately before the joint processing, and then adhered. The kraft paper 1 itself does not wrinkle during the drying process after the application of the wall material for building finish, and the kraft paper 1 itself returns to its original state against shrinkage, so that cracking and peeling occur. Can be prevented from occurring.

In addition, the kraft paper material 1 is 1 square m
Since it is thinly processed to 50 g to 80 g per contact, it is possible to form a clean and uniform wall without causing a step difference in the finish of the building finishing wall material.

On the other hand, an appropriate amount of water is added to a wall material for building finishing which is made from the raw unprocessed dry shirasu raw material, kneaded, and the gypsum board 2A, 2B surface shall be painted, subjected to surface finishing by various designs and dried to form a wall material for architectural finishing such as a plastering wall material or a painted wall material, and dry shirasu, plaster An appropriate amount of water is added to the wall material for building finishing, which is composed of materials, clay materials, shirasu balloons, coloring pigments, sasa, and an adhesion reinforcing agent, and an appropriate amount of water is added and kneaded. By painting, applying a surface finishing process by various designs and drying, a wall material for architectural finishing such as a plastering wall material or a painted wall material is formed.
65%, gypsum material 30-40%, clay material 3-10%, shirasu balloon 5-10%, adhesive reinforcing agent 0.08-2%, coloring pigment 0.01-3%, sasa 1-5% An appropriate amount of water is added to the wall material for building finishing prepared as a composition and kneaded, and the gypsum board 2A, 2 g
By painting the 2B surface, applying a surface finishing process with various designs, and drying it, a wall material for architectural finishing, such as a plastering wall material or a painted wall material, was formed. Fill the gap between the joints between the two boards with a caulking material or joint putty, and then apply a tape processed into a mesh such as cloth, vinyl, or glass fiber with a bonding adhesive, and then apply this tape. It is not necessary to go through a complicated construction process of applying a joint joint putty on the surface smoothly. Moreover, the kraft paper material 1 is simply applied to the joint surface portion P of the gypsum boards 2A and 2B of the base 2 without applying an adhesive reinforcing agent as a base treatment on the board surface in advance, and the base 2 is applied and dried. It does not cause cracking, peeling, or the like on the building finishing wall material to be made.

According to the present invention, it is possible to form a wall material for architectural finish which embodies the background of softness and roughness inherent in Shirasu, which is characteristic of Shirasu, and furthermore, measures against organic compound hypersensitivity. , Sick house countermeasures, or the use of depleted sand as an alternative building material
In addition to resource saving, non-pollution, detoxification, and price reduction, inorganic properties, extensibility, coloring, fire resistance, fire resistance, sound insulation, humidity control, antibacterial properties, heat storage insulation, deodorant, ventilation And the like.

In addition, the generation of conventional chemical substances such as formaldehyde can be suppressed, and measures can be taken against organic compound hypersensitivity, measures against sick houses, and can be used as alternative building materials for depleted sand, contributing to the construction of healthy houses. It can also contribute to the revitalization of local industries in depopulated areas.

[Brief description of the drawings]

FIG. 1 is a front view showing a board wall surface after joint processing according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the board wall surface after the joint processing as viewed from above.

FIG. 3 is a perspective view showing a board wall surface after joint processing.

FIG. 4 is a perspective view showing a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Kraft paper material 2 ... Ground 2A, 2B ... Gypsum board 3 ... Vegetable starch paste P ... Joint surface part Q ... Surfaces other than joint surface part 100 ... Ground surface 101A ... Board 101B ... Board 103 ... Tape material 104 ... Joint joint putty

Claims (8)

[Claims] 1. A wall joint processing method for a building finish, wherein a kraft paper material having the same water absorption as that of the gypsum board is attached to a joint surface of the gypsum board stuck to the base surface. 2. The method according to claim 1, wherein the kraft paper has the same expansion and contraction rate as a gypsum board. 3. The method according to claim 1, wherein the kraft paper material is stuck with a vegetable starch paste as a natural material. 4. The kraft paper material is coated with vegetable starch paste in advance, allowed to stand for a while to expand, and then coated with vegetable starch paste again immediately before joint processing, and adhered. 4. The wall joint processing method for construction finishing according to any one of 1 to 3. 5. The method according to claim 1, wherein the kraft paper is thinly processed to 50 g to 80 g per square meter. 6. An appropriate amount of water is added to and kneaded with a raw material for wall finishing of a building made of raw unprocessed dry shirasu as raw material,
By painting the plasterboard surface after joint processing that is adhered to the base surface, applying a surface finishing process with various designs and drying, it is a wall material for architectural finishing such as a plastering wall material or a painted wall material The wall finishing treatment method for a building finish according to any one of claims 1 to 5, wherein 7. An appropriate amount of water is added to a raw material for building finishing material consisting of dried shirasu, gypsum material, clay material, shirasu balloon, coloring pigment, sasa, and adhesion reinforcing agent, and the mixture is kneaded and adhered to the base surface. Painted on the plasterboard surface after the joint processing
6. A wall joint for architectural finish according to any one of claims 1 to 5, wherein a wall material for architectural finish such as a plastering wall material or a painted wall material is formed by applying a surface finishing process of various designs and drying. Processing method. 8. Dry shirasu 50-65%, gypsum material 30-
40%, clay material 3-10%, shirasu balloon 5-10
%, Adhesion reinforcing agent 0.08 to 2%, coloring pigment 0.01 to 3
%, And 1-5% of susas as components, add an appropriate amount of water to the wall material for building finishing, knead the mixture, and apply it to the gypsum board surface after the joint treatment, which is stuck to the base surface. ,
6. A wall joint for architectural finish according to any one of claims 1 to 5, wherein a wall material for architectural finish such as a plastering wall material or a painted wall material is formed by applying a surface finishing process of various designs and drying. Processing method.